USIS provided security-based information and service solutions to both government and corporate customers, in the United States and abroad. Its corporate headquarters were in Falls Church, in Greater Washington, D.C. USIS was a part of Altegrity Inc., a company headquartered in the Falls Church area that was owned by Providence Equity Partners. USIS was founded in 1996 after the investigative branch of the United States Office of Personnel Management (OPM) was privatized. Its creation was due to an effort of Vice President of the United States Al Gores effort to reduce the size of the civil service. Originally known as U.S. Investigations Services Inc., it was at first an employee-owned company. The Carlyle Group invested in USIS and in 2003 Welsh, Carson, Anderson & Stowe also committed capital to them. In 2007, Carlyle announced that it would sell USIS to Providence Equity Partners, a private equity firm, for US$1.5 billion.